FraMCoS 7 2010 Jeju, South Korea

Fundamental properties of shrinkage cracking of high performance fiber reinforced cement based composites

High Performance Fiber Reinforced Cement-based Composites (HPFRCC) are provided with high ductility with multiple cracking, thin crack width and pseudo-strain hardening behavior. Such mechani- cal properties are expected to serve for a long service life of concrete structures. However, HPFRCC…

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Year 2010
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Abstract

High Performance Fiber Reinforced Cement-based Composites (HPFRCC) are provided with high ductility with multiple cracking, thin crack width and pseudo-strain hardening behavior. Such mechani- cal properties are expected to serve for a long service life of concrete structures. However, HPFRCC usually have high cement content per unit volume but no coarse aggregates. Therefore they have a high risk of shrin- kage induced cracking. In this paper, some results of experimental study on drying shrinkage of HPFRCC are presented. Restrained shrinkage tests with three different geometries and four mix proportions including plain mortar were carried out. Besides the influence of the specimen's geometry, the influence of specimen's size and degree of restraint was studied.